# Professional services firms headquartered in Belgium Tamtam tracks 396 professional services firms headquartered in Belgium. This list ranks the 100 largest by number of employees on LinkedIn, led by BDO, freelance and House of HR. Their median headcount is 590. Half of them were founded in 1992 or later. The most common headquarters are Brussels (22), Antwerp (11) and Kortrijk (9). This selection of professional services firms in Belgium showcases a concentration of large and mid-sized companies, with a strong presence in IT services and consulting, as well as traditional accounting and engineering. Key players include BDO, a global accounting firm; freelance, specializing in customized ICT solutions; House of HR, providing staffing services; and Akka Technologies, an engineering consulting leader. The companies listed exhibit a notable clustering of headquarters in Brussels, including TRACTEBEL for sustainable energy projects and TPF for multidisciplinary engineering consultancy. Many firms, such as Cegeka and delaware, focus on digital solutions and business transformation, indicating a strong emphasis on technology-driven professional services. πŸ‡§πŸ‡ͺ Belgium Β· 100 companies Β· Updated Nov 11, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [BDO](https://www.tamtam.ai/c/bdo-brussels) (bdo.global)
Providing professional services globally with 1800 offices, focusing on quality, technology, and innovative solutions for long-term client value. | Accounting | πŸ‡§πŸ‡ͺ Brussels | 51,974 | | | 2 | [freelance](https://www.tamtam.ai/c/freelance-chaumont-gistoux) (s11.be)
Specializing in customized ICT solutions, S11 provides managed infrastructure services, consultancy, and skilled consultants for long-term client relationships | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Chaumont-Gistoux | 13,672 | | | 3 | [House of HR](https://www.tamtam.ai/c/house-of-hr) (houseofhr.com)
Provides skilled professionals and specialized staffing solutions across industries, including engineering, consulting, digital recruitment, and permanent placements. | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 8,123 | | | 4 | [Akka Technologies](https://www.tamtam.ai/c/akka-technologies) (akkodis.com)
European leader in engineering consulting and R&D services, supporting clients with digital solutions and expertise across various sectors throughout product life cycles. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Brussels | 7,700 | 1984 | | 5 | [TRACTEBEL](https://www.tamtam.ai/c/tractebel) (tractebel-engie.com)
Provides integrated solutions for sustainable energy and built environment projects, offering expertise in nuclear, renewables, power, grids, infrastructure, and water resources. | Engineering Services | πŸ‡§πŸ‡ͺ Brussels | 7,185 | | | 6 | [Cegeka](https://www.tamtam.ai/c/cegeka) (cegeka.com)
A family-owned IT solutions provider focused on creating personalized customer experiences, aiming to become the leading European orchestrator of digital business platforms | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Hasselt | 5,167 | 1992 | | 7 | [Equans BeLux](https://www.tamtam.ai/c/equans-belux) (equans.be)
The company focuses on solving challenges by creating smarter cities, efficient industries, and sustainable buildings through a range of expertise and services | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Brussels | 4,917 | | | 8 | [TPF](https://www.tamtam.ai/c/tpf) (tpfgroup.com)
Global multidisciplinary engineering consultancy providing end-to-end project execution across fifty countries using local know-how and international expertise for diverse infrastructure and development sectors. | Civil Engineering | πŸ‡§πŸ‡ͺ Brussels | 4,569 | | | 9 | [delaware International](https://www.tamtam.ai/c/delaware-international) (delaware.pro)
Provides advanced business transformation solutions and services using SAP and Microsoft ecosystems, ensuring continuous improvement and sustainability. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 3,291 | 2003 | | 10 | [Deloitte Belgium](https://www.tamtam.ai/c/deloitte-belgium) (deloitte.com)
A leading audit and consulting practice in Belgium offering services in audit, accounting, tax, consulting, and financial advisory to national and international clients | Management Consulting | πŸ‡§πŸ‡ͺ Zaventem | 2,840 | 1953 | | 11 | [Arthur D. Little](https://www.tamtam.ai/c/arthur-d-little) (adlittle.com)
Providing creative and scientific solutions, we help clients anticipate change, innovate through technology and strategy, and make a positive impact globally | Business Consulting and Services | πŸ‡§πŸ‡ͺ Brussels | 2,467 | 1886 | | 12 | [Accent Jobs](https://www.tamtam.ai/c/accent-jobs) (accentjobs.be)
Personalized recruitment services connecting job seekers and companies with flexible, permanent, local, and international job opportunities efficiently. | Human Resources Services | πŸ‡§πŸ‡ͺ Roeselare | 1,940 | 1995 | | 13 | [delaware BeLux](https://www.tamtam.ai/c/delaware-belux) (delaware.pro)
Global provider of advanced IT solutions and services, guiding organizations through business and digital transformations with a focus on innovation, technology, and sustainability | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 1,875 | 2003 | | 14 | [KPMG Belgium](https://www.tamtam.ai/c/kpmg-belgium) (kpmg.com)
Helping organizations harness data to drive digitalization, manage risk, optimize costs, and stay relevant through technology, innovation, and compliance | Business Consulting and Services | πŸ‡§πŸ‡ͺ Zaventem | 1,721 | | | 15 | [Marsh Europe](https://www.tamtam.ai/c/marsh-europe) (marsh.com)
Global leader in insurance brokerage and risk advisory services, offering data-driven solutions for commercial and individual clients worldwide Operating in 130+ countries | Professional Services | πŸ‡§πŸ‡ͺ Brussels | 1,682 | | | 16 | [Orizio Group](https://www.tamtam.ai/c/orizio-group) (orizio-group.com)
International aerospace ecosystem focusing on design, manufacturing, maintenance, and engineering services for aviation, space, and UAV markets through specialized high-tech subsidiary companies. | Aviation and Aerospace Component Manufacturing | πŸ‡§πŸ‡ͺ Zaventem | 1,609 | 2020 | | 17 | [PwC Belgium](https://www.tamtam.ai/c/pwc-belgium) (pwc.be)
Global network committed to solving important problems, building trust, and providing quality assurance, advisory, and tax services in 156 countries | Accounting | πŸ‡§πŸ‡ͺ Diegem | 1,594 | | | 18 | [Partena Professional](https://www.tamtam.ai/c/partena-professional) (partena-professional.be)
A service provider specializing in entrepreneurship and personnel management, offering support in administrative procedures, HR policy, legal advice, and consultancy services | Human Resources Services | πŸ‡§πŸ‡ͺ Brussels | 1,535 | | | 19 | [VinΓ§otte](https://www.tamtam.ai/c/vincotte) (vincotte.be)
It offers objective advisory services in inspection, certification, conformity assessment, and training, contributing to a safer, more efficient society for businesses and individuals. | Public Safety | πŸ‡§πŸ‡ͺ Vilvoorde | 1,504 | 1872 | | 20 | [House Of Talents BE](https://www.tamtam.ai/c/house-of-talents-be) (houseoftalents.be)
Specializing in matching candidates to job opportunities and filling client vacancies, this service group employs over 1,000 people across 13 specialized talents | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 1,359 | 2008 | | 21 | [NRB](https://www.tamtam.ai/c/nrb) (keyes.eu)
A leading ICT provider in Belgium, offering consultancy, software, infrastructure, cloud services, and staffing solutions across various sectors with state-of-the-art datacenters | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ LiΓ¨ge | 1,357 | 1987 | | 22 | [Moore Belgium](https://www.tamtam.ai/c/moore-belgium) (moore.be)
Leading independent accounting and consulting firm in Belgium helping entrepreneurs achieve their goals through a wide range of services including tax, audit, finance, and business consulting | Business Consulting and Services | πŸ‡§πŸ‡ͺ Brussels | 1,350 | | | 23 | [Mercer Europe](https://www.tamtam.ai/c/mercer-europe) (corporate.marsh.com)
Dedicated to providing advisory services and technological solutions to help organizations meet workforce health, investment, and career needs Operating in multiple countries | Professional Services | πŸ‡§πŸ‡ͺ Brussels | 1,235 | 1993 | | 24 | [Randstad Belgium](https://www.tamtam.ai/c/randstad-belgium) (randstad.be)
Specializes in temporary staffing, ICT, engineering, life sciences, HR, finance, sales, and offers HR services like outplacement and assessments. | Human Resources Services | πŸ‡§πŸ‡ͺ Strombeek-Bever | 1,176 | 1965 | | 25 | [NSI](https://www.tamtam.ai/c/nsi-awans) (groupensi.com)
Providing integrated IT solutions and high-value services including enterprise architecture, ERP, AI, mobile, e-commerce, and infrastructure management for businesses. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Awans | 1,172 | 1993 | | 26 | [ADE - Evidence for Better Policy](https://www.tamtam.ai/c/ade-evidence-for-better-policy) (ade.eu)
Consultancy providing independent advice for international institutions and public organizations in policy design, implementation, and evaluation across various thematic areas | International Trade and Development | πŸ‡§πŸ‡ͺ Louvain-la-Neuve | 1,123 | 1990 | | 27 | [AGO Jobs & HR](https://www.tamtam.ai/c/ago-jobs-and-hr) (ago.jobs)
Provides nationwide HR services with specialized divisions, focusing on authentic relationships and employees speaking clients' language sincerely and constructively. | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 1,091 | 1986 | | 28 | [RMC](https://www.tamtam.ai/c/rmc) (rmconsulting.be)
Specializing in Oracle E-Business Suite and Oracle Cloud applications, we provide implementation, consulting, training, upgrades, business intelligence solutions, and maintenance support services | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kontich | 988 | 2000 | | 29 | [BDO Belgium](https://www.tamtam.ai/c/bdo-belgium) (bdo.be)
Providing audit, tax, legal, accounting, and advisory services with a personal approach, local presence, and global expertise for sustainable growth. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Zaventem | 987 | 1967 | | 30 | [Mensura](https://www.tamtam.ai/c/mensura) (mensura.be)
Specializing in workplace prevention and health promotion, this team offers expert advice and personalized solutions to help maintain a productive and compliant workforce | Human Resources Services | πŸ‡§πŸ‡ͺ Brussels | 867 | 2006 | | 31 | [Logi-technic](https://www.tamtam.ai/c/logi-technic) (logi-technic.be)
Passionate problem solvers at a technical outsourcing agency tackling challenges with enthusiasm and expertise | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Jabbeke | 864 | | | 32 | [MIDES](https://www.tamtam.ai/c/mides) (mides.be)
MIDES is an engineering firm providing technical project support, designing installations, managing projects, and offering maintenance management services | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Roeselare | 841 | 1995 | | 33 | [Stibbe](https://www.tamtam.ai/c/stibbe) (stibbe.com)
A leading independent international law firm providing high-quality legal advice, transactions, and litigation services to a diverse range of clients globally | Law Practice | πŸ‡§πŸ‡ͺ Brussels | 840 | 1911 | | 34 | [Actief Interim](https://www.tamtam.ai/c/actief-interim) (actief.be)
Recruitment partner focusing on local, personal connections between companies and candidates, emphasizing sustainable growth and responsible business practices. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Lummen | 839 | 1988 | | 35 | [QbD Group](https://www.tamtam.ai/c/qbd-group) (qbdgroup.com)
Support life science companies globally with regulatory, clinical, quality assurance, validation, software, and go-to-market services for medical products. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Antwerp | 834 | 2011 | | 36 | [Inetum-Realdolmen](https://www.tamtam.ai/c/inetum-realdolmen) (inetum.com)
Specialized professionals guide over 800 customers worldwide in post-digital transformation, offering digital technology and innovation to optimize positive digital flow | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Huizingen | 831 | | | 37 | [9altitudes](https://www.tamtam.ai/c/9altitudes) (9altitudes.com)
End-to-end integrator specializing in ERP, PLM, DMS, and data solutions Improving business performance by deploying technological solutions and optimizing processes | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Kortrijk | 824 | 2000 | | 38 | [Copus](https://www.tamtam.ai/c/copus) (copus.group)
HR group spreading joy of work, focusing on matching skilled talent with employers in technical, construction, and office roles through warm relationships | Human Resources Services | πŸ‡§πŸ‡ͺ Antwerp | 804 | 1991 | | 39 | [United Consultingβ„’](https://www.tamtam.ai/c/united-consulting) (unitedconsulting.be)
We specialize in attracting top talent in Finance, Business Support, HR, Supply Chain, and Marketing, focusing on personal growth and success stories | Business Consulting and Services | πŸ‡§πŸ‡ͺ Niel | 787 | 1998 | | 40 | [TUC RAIL](https://www.tamtam.ai/c/tuc-rail) (tucrail.be)
Specialized engineering company providing innovative, sustainable railway technology and infrastructure solutions with multidisciplinary expertise for projects in Belgium and internationally. | Civil Engineering | πŸ‡§πŸ‡ͺ Brussels | 760 | 1992 | | 41 | [GRITT](https://www.tamtam.ai/c/gritt) (gritt.be)
A team of dedicated technical experts providing outsourcing services for specialized technicians, engineering consultants, and turnkey infrastructure projects | Outsourcing and Offshoring Consulting | πŸ‡§πŸ‡ͺ Antwerp | 759 | | | 42 | [Attentia](https://www.tamtam.ai/c/attentia) (attentia.be)
This company provides HR advice focused on well-being, protection, and prevention, finding optimal solutions for individuals and employing over 800 people | Human Resources Services | πŸ‡§πŸ‡ͺ Ghent | 739 | 2006 | | 43 | [Projective Group](https://www.tamtam.ai/c/projective-group) (projectivegroup.com)
Specialist in delivering holistic and pragmatic change solutions for clients within the Financial Services industry to thrive. | Financial Services | πŸ‡§πŸ‡ͺ Diegem | 725 | | | 44 | [VGD](https://www.tamtam.ai/c/vgd) (vgd.eu)
A knowledgeable partner supporting Flemish entrepreneurs with a wide range of business questions using proactive expertise and international connections | Financial Services | πŸ‡§πŸ‡ͺ Wemmel | 688 | 1981 | | 45 | [Vanbreda Risk & Benefits](https://www.tamtam.ai/c/vanbreda-risk-and-benefits) (vanbreda.be)
A leading insurance broker in the Benelux with 85 years of experience, offering tailor-made solutions for businesses and individuals worldwide | Insurance | πŸ‡§πŸ‡ͺ Antwerp | 673 | 1937 | | 46 | [Sweco Belgium](https://www.tamtam.ai/c/sweco-belgium) (swecobelgium.be)
Sweco plans and designs sustainable buildings, efficient infrastructure, and clean water access in Europe and 70 countries worldwide | Civil Engineering | πŸ‡§πŸ‡ͺ Brussel/Bruxelles | 666 | 1956 | | 47 | [CBTW IT & Technology / Positive Thinking Company](https://www.tamtam.ai/c/cbtw-it-and-technology-positive-thinking-company) (cbtw.tech)
Providing comprehensive technology solutions including software engineering, security, cloud, data analytics, and digital workplace through a global delivery model. | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Brussels | 644 | | | 48 | [Bright Plus](https://www.tamtam.ai/c/bright-plus) (brightplus.be)
Expertise in multilingual labor market, providing transparent, honest recruitment advice to find suitable talent for permanent or project roles. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Vilvoorde | 643 | | | 49 | [BCCL](https://www.tamtam.ai/c/bccl) (bccl.be)
Specializing in consultancy, coaching, and tailored training programs for operational staff and middle management with a practical and direct approach Also offering logistics training with accredited partners | Transportation, Logistics, Supply Chain and Storage | πŸ‡§πŸ‡ͺ Ghent | 630 | 1997 | | 50 | [SBB Accountants & Advisors](https://www.tamtam.ai/c/sbb-accountants-and-advisors) (sbb.be)
Accounting firm providing bookkeeping, taxation, environmental regulation support, strategic advice, and ICT-backed services for businesses at all stages. | Financial Services | πŸ‡§πŸ‡ͺ Leuven | 590 | 1971 | | 51 | [Vandelanotte](https://www.tamtam.ai/c/vandelanotte) (vandelanotte.be)
A multidisciplinary team offering accountancy, audit, tax, legal, corporate finance, HR solutions, estate planning, cyber security, subsidy advice, and risk management services | Business Consulting and Services | πŸ‡§πŸ‡ͺ Kortrijk | 587 | 1948 | | 52 | [Human8](https://www.tamtam.ai/c/human8) (wearehuman8.com)
A human-driven consultancy that connects brands with people and culture to drive positive change, with a team of +900 across 23 locations worldwide | Market Research | πŸ‡§πŸ‡ͺ Ghent | 587 | | | 53 | [AE](https://www.tamtam.ai/c/ae) (ae.be)
Consultancy specializing in digital transformation, providing seamless ICT solutions to help organizations achieve business objectives through customer-focused, practical advice and pragmatic solutions | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Heverlee | 586 | 1999 | | 54 | [Sabena Engineering](https://www.tamtam.ai/c/sabena-engineering) (sabena-engineering.com)
International MRO provider for Commercial Aviation and Government/Defense markets Offers maintenance and engineering solutions, including line maintenance, components repair, and engine services | Airlines and Aviation | πŸ‡§πŸ‡ͺ Zaventem | 577 | 1923 | | 55 | [Ardena](https://www.tamtam.ai/c/ardena) (ardena.com)
Global provider of drug development, bioanalysis, and regulatory services with expertise in advanced formulations and specialized drug delivery technologies. | Pharmaceutical Manufacturing | πŸ‡§πŸ‡ͺ Ghent | 566 | 2017 | | 56 | [TEC](https://www.tamtam.ai/c/tec-antwerpen) (tec.be)
Technical consultancy agency with experienced team of consultants specializing in various industries Offers project sourcing and builds partnerships with clients and professionals | Outsourcing and Offshoring Consulting | πŸ‡§πŸ‡ͺ Antwerp | 558 | | | 57 | [ITZU Group](https://www.tamtam.ai/c/itzu-group) (itzu.eu)
HR and Facility services provider focusing on people, offering recruitment, training, cleaning services, and career support for employees, clients, and partners | Human Resources Services | πŸ‡§πŸ‡ͺ Hasselt | 538 | 2016 | | 58 | [SECO Group](https://www.tamtam.ai/c/seco-group) (groupseco.com)
A leading provider of technical risk prevention, quality supervision, and inspection services for construction projects, supporting innovation and sustainability | Construction | πŸ‡§πŸ‡ͺ Brussels | 525 | | | 59 | [Synergie Belgium](https://www.tamtam.ai/c/synergie-belgium) (synergiejobs.be)
A team of 500 colleagues across 70+ locations in Belgium, specializing in Interim, Careers, Construct, and S&You to match individuals with the right workplaces | Human Resources Services | πŸ‡§πŸ‡ͺ Antwerp | 520 | 1969 | | 60 | [Amrop](https://www.tamtam.ai/c/amrop) (amrop.com)
Global executive search firm providing leadership and board services across 55 countries, with a context-driven approach to identifying and positioning top talent worldwide | Business Consulting and Services | πŸ‡§πŸ‡ͺ Brussels | 518 | 1977 | | 61 | [AXI IT Services](https://www.tamtam.ai/c/axi-it-services) (axi.be)
Innovative software and IT solutions provider for various industries, helping clients succeed and achieve their vision with offices in Netherlands and Belgium | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Willebroek | 497 | 1985 | | 62 | [Studibo](https://www.tamtam.ai/c/studibo) (studibo.be)
Studibo is a group of engineering and consulting firms in Flanders, offering comprehensive services for the construction sector with a focus on customer satisfaction and continuous improvement | Engineering Services | πŸ‡§πŸ‡ͺ Merelbeke | 496 | 2022 | | 63 | [Konvert](https://www.tamtam.ai/c/konvert) (konvert.be)
A team-focused staffing agency offering tailored training, professional support, work/life balance, and opportunities for personal growth within a 25 km radius | Human Resources Services | πŸ‡§πŸ‡ͺ Kortrijk | 493 | 1964 | | 64 | [JooS Consulting](https://www.tamtam.ai/c/joos-consulting) (joosconsulting.be)
Consulting firm specializing in finance, accounting, and business support, known for personal approach Offers growth opportunities, premium training, and fun afterwork events | Financial Services | πŸ‡§πŸ‡ͺ Niel | 491 | | | 65 | [AlliA](https://www.tamtam.ai/c/allia) (allia.be)
Independent insurance broker in Belgium offering balanced insurance packages tailored to individual needs through market research and dedicated service | Insurance | πŸ‡§πŸ‡ͺ Roeselare | 484 | 1979 | | 66 | [Tempo-Team Belgium](https://www.tamtam.ai/c/tempo-team-belgium) (tempo-team.be)
Providing customized HR services and recruitment solutions for flexible and fixed work arrangements, serving large companies and SMEs. | Human Resources Services | πŸ‡§πŸ‡ͺ Strombeek-Bever | 476 | | | 67 | [PZ](https://www.tamtam.ai/c/pz) (pz.be)
HR consultancy specializing in optimizing recruitment, payroll, training, and more for businesses, providing expertise, trends, and technologies for improved workforce satisfaction and results #teampz #weareunited | Human Resources Services | πŸ‡§πŸ‡ͺ Niel | 467 | | | 68 | [TriFinance Belgium](https://www.tamtam.ai/c/trifinance-belgium) (trifinance.com)
An independent international growth service provider offering advice, implementation, and support in finance and control, focusing on achieving tangible results for clients | Financial Services | πŸ‡§πŸ‡ͺ Antwerp | 467 | 2002 | | 69 | [ALASKA \| Advisors Accountants Auditors](https://www.tamtam.ai/c/alaska-advisors-accountants-auditors) (alaska-group.eu)
Alaska provides accountancy, tax advice, and audit services in Belgium with a focus on personalized approach and quality service They are also a member of PrimeGlobal | Financial Services | πŸ‡§πŸ‡ͺ Kortrijk | 466 | 2007 | | 70 | [ABO](https://www.tamtam.ai/c/abo) (abo.be)
A leading environmental consultancy firm in Belgium, providing soil and environmental services for government, corporations, and individuals with a solution-oriented approach | Environmental Services | πŸ‡§πŸ‡ͺ Gent (SDW) | 448 | | | 71 | [Express Medical](https://www.tamtam.ai/c/express-medical) (expressmedical.be)
Specializing in recruitment and selection of nursing and paramedical staff since 1988, our company partners with healthcare facilities to provide staffing solutions based on partnership, professionalism, and passion | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Brussels | 441 | 1988 | | 72 | [Titeca Pro Accountants & Experts](https://www.tamtam.ai/c/titeca-pro-accountants-and-experts) (titeca.be)
A collaborative team of diverse professionals providing specialized expertise in various business domains, ensuring clients receive knowledgeable, experienced guidance for their future decisions | Accounting | πŸ‡§πŸ‡ͺ Roeselare | 438 | 1987 | | 73 | [Agidens](https://www.tamtam.ai/c/agidens) (agidens.com)
Industrial process automation partner, improving production processes daily. Provides automation solutions, digital technologies, and value-added services for safer, smarter, more flexible, and sustainable production. | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Zwijndrecht | 434 | 1947 | | 74 | [Cronos Europa](https://www.tamtam.ai/c/cronos-europa) (cronoseuropa.com)
Providing IT and digital communication solutions to European institutions, leveraging advanced technologies and extensive expertise across multiple countries. | Professional Services | πŸ‡§πŸ‡ͺ Brussels | 430 | 2005 | | 75 | [SDE](https://www.tamtam.ai/c/sde) (alistar.net)
The company helps modern businesses eliminate IT stress with software and infrastructure solutions to improve productivity, reduce costs, and enable growth | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Lochristi | 427 | 1982 | | 76 | [Pauwels Consulting](https://www.tamtam.ai/c/pauwels-consulting) (pauwelsconsulting.com)
Staffing and managing projects with experts in engineering, life sciences, and IT for organizations across Belgium, France, and the Netherlands. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Diegem | 426 | 1999 | | 77 | [Contec - Industrial Automation Solutions](https://www.tamtam.ai/c/contec-industrial-automation-solutions) (contec-ias.com)
International engineering specializing in improving industrial processes with services in electricity, automation, MES/MOM, and industrial IT, striving for added value and preparing companies for the future | Engineering Services | πŸ‡§πŸ‡ͺ Antwerp | 420 | 1986 | | 78 | [Laborelec](https://www.tamtam.ai/c/laborelec) (laborelec.com)
A leading expertise and research center in electrical power technology, providing specialized services and solutions for the energy transition globally | Utilities | πŸ‡§πŸ‡ͺ Linkebeek | 418 | | | 79 | [ASIST](https://www.tamtam.ai/c/asist) (asist.be)
We are a customer-focused professional service provider specialized in application development and deep technical consultation for major organizations globally | IT Services and IT Consulting | πŸ‡§πŸ‡ͺ Schaerbeek | 414 | 1995 | | 80 | [GEOxyz](https://www.tamtam.ai/c/geoxyz) (geoxyz.eu)
Maritime data specialist providing hydrographic, geophysical, geotechnical, and topographical surveys alongside renewable energy support and crew transfers for offshore infrastructure development projects. | Maritime Transportation | πŸ‡§πŸ‡ͺ Zwevegem | 411 | 1998 | | 81 | [Superellipse](https://www.tamtam.ai/c/superellipse) (superellipse.be)
Award-winning design and innovation agency with expertise in digital product, strategy, branding, and spatial design Partnering with clients to create impactful experiences | Design Services | πŸ‡§πŸ‡ͺ Mechelen | 409 | 1995 | | 82 | [ESN](https://www.tamtam.ai/c/esn-brussels) (esn.eu)
Leading communications agency and information provider in Brussels, offering media services, business consultancy, events management, and translation services with creativity and technology | Public Relations and Communications Services | πŸ‡§πŸ‡ͺ Brussels | 395 | 1986 | | 83 | [CATTAN](https://www.tamtam.ai/c/cattan)
A management consulting firm located in Dendermonde, Belgium, specializing in providing strategic guidance and solutions for businesses | Business Consulting and Services | πŸ‡§πŸ‡ͺ Dendermonde | 392 | | | 84 | [Group-IPS](https://www.tamtam.ai/c/group-ips) (group-ips.com)
Expert project management and engineering services supporting industrial projects across multiple sectors to streamline success and improve operational efficiency worldwide. | Engineering Services | πŸ‡§πŸ‡ͺ Nivelles | 391 | 1992 | | 85 | [ARTES](https://www.tamtam.ai/c/artes) (artes.law)
Specialized business law firm in IP, IT, Privacy & Security, with expertise in copyright, trademarks, patents, computer law, and commercial disputes Providing personalized legal representation | Law Practice | πŸ‡§πŸ‡ͺ Antwerp | 384 | 2018 | | 86 | [IBF Expertise](https://www.tamtam.ai/c/ibf-expertise) (ibf.be)
Consultancy services for international development projects focusing on economic growth, trade, education, social reforms, and institutional support in emerging economies. | International Affairs | πŸ‡§πŸ‡ͺ Brussels | 380 | 1977 | | 87 | [INDEA](https://www.tamtam.ai/c/indea) (indea.be)
We specialize in reducing energy costs for industrial businesses through improving process efficiency and optimizing heat consumption, resulting in significant savings and reduced carbon footprint | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Aalst | 378 | 2007 | | 88 | [SBE](https://www.tamtam.ai/c/sbe) (sbe-engineering.com)
Innovative civil engineering and electromechanical solutions provider with expertise in port, river, civil engineering, urbanism, industrial constructions, and electromechanics #expertsatplay | Civil Engineering | πŸ‡§πŸ‡ͺ Sint-Niklaas | 376 | 1988 | | 89 | [Gumption Group](https://www.tamtam.ai/c/gumption-group) (gumption.eu)
Innovative ecosystem specializing in brand, customer experience, digital technology, and process automation Co-creating the future with interconnected start-ups and scale-ups | Business Consulting and Services | πŸ‡§πŸ‡ͺ Kontich | 372 | | | 90 | [Cohezio](https://www.tamtam.ai/c/cohezio) (cohezio.be)
A leading provider of external workplace prevention and protection services, offering a multidisciplinary team to ensure health, safety, and well-being at work | Hospitals and Health Care | πŸ‡§πŸ‡ͺ Bruxelles Brussel | 372 | | | 91 | [Skill BuilderS](https://www.tamtam.ai/c/skill-builders) (skillbuilders.be)
Skill BuilderS guides and coaches individuals and businesses towards sustainable workplace happiness through talent development, career counseling, assessment, and customized learning experiences | Human Resources Services | πŸ‡§πŸ‡ͺ Aalst | 370 | 1986 | | 92 | [Multi.engineering](https://www.tamtam.ai/c/multi-engineering) (multi.engineering)
The company provides flexible engineering solutions for clients in industries such as Industry, Building & Infrastructure, and Maritime & Offshore through design, sourcing, and consultancy services | Industrial Machinery Manufacturing | πŸ‡§πŸ‡ͺ Temse | 369 | 1996 | | 93 | [JONCKERS](https://www.tamtam.ai/c/jonckers) (acclaro.com)
The company provides quality translation and localization services since 1994 Their platform, WordsOnline, offers AI-powered translation solutions for global businesses | Translation and Localization | πŸ‡§πŸ‡ͺ Brussels | 368 | 1994 | | 94 | [Talentus](https://www.tamtam.ai/c/talentus) (talentus.be)
A dedicated HR partner offering tailored recruitment solutions for companies of all sizes and sectors, connecting committed candidates with valuable skills | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Antwerp | 367 | | | 95 | [Intys](https://www.tamtam.ai/c/intys) (intys.eu)
Support organizations in Belgium across various sectors with project management, business transformation, and operational excellence consulting services. | Business Consulting and Services | πŸ‡§πŸ‡ͺ Brussels | 365 | 2007 | | 96 | [United Experts Group](https://www.tamtam.ai/c/united-experts-group) (unitedexpertsgroup.be)
A knowledge network connecting businesses with diverse expertise to guide and advise entrepreneurs in achieving growth and realizing their plans at every crucial stage | Business Consulting and Services | πŸ‡§πŸ‡ͺ Beringen | 364 | 1996 | | 97 | [PKF BOFIDI](https://www.tamtam.ai/c/pkf-bofidi) (pkfbofidi.com)
Professional network offering accounting, tax, and services in Brussels, Antwerp, and Ghent Customer-oriented for SMEs, professionals, and international companies with proactive expertise | Financial Services | πŸ‡§πŸ‡ͺ Ghent | 359 | | | 98 | [Vivaldis](https://www.tamtam.ai/c/vivaldis) (vivaldisinterim.be)
Connecting individuals with interim or permanent job opportunities, focusing on personality over experience and offering continuous job search support. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ Antwerp | 359 | 1991 | | 99 | [Randstad Digital Belgium](https://www.tamtam.ai/c/randstad-digital-belgium) (randstaddigital.be)
Provides global talent, production capabilities, and specialized solutions for rapid business transformation, focusing on customer experience, engineering, data & analytics, and cloud. | Staffing and Recruiting | πŸ‡§πŸ‡ͺ | 358 | | | 100 | [De Smet Engineers & Contractors (DSEC)](https://www.tamtam.ai/c/de-smet-engineers-and-contractors-dsec) (dsengineers.com)
Global provider of Engineering and Turn Key projects for various industries including bio-based chemicals, energy efficiency, sugars, oils, agro-nutrients, with a focus on sustainability | Engineering Services | πŸ‡§πŸ‡ͺ Mont-Saint-Guibert | 348 | 1989 | ## How this list is built Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026. ## More company lists in Belgium - [The largest companies in Belgium](https://www.tamtam.ai/l/largest-companies-belgium) (6,987) - [Multinational companies in Belgium](https://www.tamtam.ai/l/multinational-companies-belgium) (1,745) - [Manufacturers in Belgium](https://www.tamtam.ai/l/manufacturers-belgium) (630) - [Retail chains in Belgium](https://www.tamtam.ai/l/retail-chains-belgium) (622) - [Companies with in-house R&D in Belgium](https://www.tamtam.ai/l/r-and-d-companies-belgium) (605) - [IT services companies in Belgium](https://www.tamtam.ai/l/it-services-companies-belgium) (551) - [IT Services and IT Consulting companies in Belgium](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-belgium) (542) - [Family-owned companies in Belgium](https://www.tamtam.ai/l/family-owned-companies-belgium) (435) - [Software Development companies in Belgium](https://www.tamtam.ai/l/software-development-companies-belgium) (430) - [Transportation, Logistics, Supply Chain and Storage companies in Belgium](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-belgium) (409) - [SaaS companies in Belgium](https://www.tamtam.ai/l/saas-companies-belgium) (407) - [Critical infrastructure operators in Belgium](https://www.tamtam.ai/l/critical-infrastructure-operators-belgium) (354) - [Hardware manufacturers in Belgium](https://www.tamtam.ai/l/hardware-companies-belgium) (320) - [Financial services firms in Belgium](https://www.tamtam.ai/l/financial-services-firms-belgium) (314) - [Distributors and wholesalers in Belgium](https://www.tamtam.ai/l/distributors-and-wholesalers-belgium) (314) - [Consulting firms in Belgium](https://www.tamtam.ai/l/consulting-firms-belgium) (285) - [Retail companies in Belgium](https://www.tamtam.ai/l/retail-companies-belgium) (285) - [Food and Beverage Manufacturing companies in Belgium](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-belgium) (282) - [Truck Transportation companies in Belgium](https://www.tamtam.ai/l/truck-transportation-companies-belgium) (259) - [Logistics companies in Belgium](https://www.tamtam.ai/l/logistics-companies-belgium) (258) - [Advertising Services companies in Belgium](https://www.tamtam.ai/l/advertising-services-companies-belgium) (222) - [Education providers in Belgium](https://www.tamtam.ai/l/education-companies-belgium) (209) - [Consumer goods companies in Belgium](https://www.tamtam.ai/l/consumer-goods-companies-belgium) (205) - [E-commerce companies in Belgium](https://www.tamtam.ai/l/ecommerce-companies-belgium) (201) ## The same list elsewhere in Belgium - [Professional services firms in Flanders](https://www.tamtam.ai/l/professional-services-firms-flanders) (263) - [Professional services firms in Wallonia](https://www.tamtam.ai/l/professional-services-firms-wallonia) (38) - [Professional services firms in Brussels](https://www.tamtam.ai/l/professional-services-firms-brussels) (64) - [Professional services firms in Antwerp](https://www.tamtam.ai/l/professional-services-firms-antwerp) (49) --- Source: https://www.tamtam.ai/l/professional-services-firms-belgium